The Ring,retaining, cataloged under National Stock Number 5325-01-496-4840, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. Government technical data includes 9 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-496-4840 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Status | ACTIVE |
| Material Hardness Rating | 44.500 ROCKWELL C NOMINAL |
| Usage Design | EXTERNAL |
| Strength Rating | ERR-060 |
| Cross-Sectional Shape Style | RECTANGULAR |
| Major Thickness | 0.182 INCHES MINIMUM AND 0.194 INCHES MAXIMUM IN |
| Inside Diameter | 0.863 INCHES NOMINAL IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Ring Style | SPECIAL |
| Material | STEEL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| R271NNAA0098NN119NNQD1 | 5/9 Secondary reference U.S. Government activity |
| MIL-R-21248 | 4/1 Identification reference U.S. Government activity |
| MS90708 | 2/2 Government specification standardization U.S. Government activity |
| R271NNAA0098NN119NNQA1 | 5/9 Secondary reference U.S. Government activity |
NSN 5325-01-496-4840 is a Ring,retaining, classified under FSC 5325, Fastening Devices. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5325-01-580-5749. Verify interchangeability with system specifications before substitution.
Key specifications for 5325-01-496-4840: Material Hardness Rating: 44.500 ROCKWELL C NOMINAL; Usage Design: EXTERNAL; Strength Rating: ERR-060; Cross-Sectional Shape Style: RECTANGULAR. 9 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.